$OpenBSD: patch-base_sys_info_posix_cc,v 1.5 2014/11/19 21:27:32 robert Exp $
--- base/sys_info_posix.cc.orig.port	Wed Nov 19 05:52:58 2014
+++ base/sys_info_posix.cc	Wed Nov 19 08:38:24 2014
@@ -87,6 +87,17 @@ int64 SysInfo::AmountOfVirtualMemory() {
 }
 
 // static
+int64 SysInfo::AmountOfAvailablePhysicalMemory() {
+  long available_pages = sysconf(_SC_AVPHYS_PAGES);
+  long page_size = sysconf(_SC_PAGE_SIZE);
+  if (available_pages == -1 || page_size == -1) {
+    NOTREACHED();
+    return 0;
+  }
+  return static_cast<int64>(available_pages) * page_size;
+}
+
+// static
 int64 SysInfo::AmountOfFreeDiskSpace(const FilePath& path) {
   base::ThreadRestrictions::AssertIOAllowed();
 
